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7/17/2019 Alg_exp_wks_8th
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SMT. SULOCHANADEVI SINGHANIA SCHOOL, THANE
STD: 8TH
SUB: Maths Worksheet TERM I 2015-16
Algebraic Expression
1.
Ident!" #ono#a$s% &no#a$s and trno#a$s !ro# the !o$$o'n( a$(e&ra)
e*+ressons:
, *2 2" , / 5* , , , + / +
2
2. Wh)h o! the !o$$o'n( e*+ressons are +o$"no#a$s3
a, *2
4 * 4 12 &, 4 */ ), 4 * 4 / d, 5 e, *
-/ *
24 * 4 /
/. State the de(ree o! the !o$$o'n( +o$"no#a$s:
/* % /* 4 5" % 5*2 4 * 4 8 % *
/ 4 8*
"
*"
2 % 2a
/ 4 /a& 6a
4 &
. 7nd the a$e o! 9+- s2, 2 9 r- s
2,
5. ;dd the !o$$o'n( , a-/&4) % 2a-5&46) % -/a 42&-)
, -1-5*4*
2
% 2*
2
4*- % /*
2
-*
2
4
6.
S&tra)t: , --/+4-r !ro# 2+-48-r , /* 4 *2
- !ro# * 4 /*
2 * 4 5
. What #st &e added to the s# o! /*-"4 and -42"-5* to (et *-8"4/ 3
8. What #st &e s&tra)ted !ro# /*2 4 * 4 1 to (et 2*
2 *4 /3
. M$t+$"- ,9 +r , 9 + % r2,
, 9 2a& ,9 a& - a2
- 5&2
- /a4&,
, 92a 4 /&, 9/a - 2&,
, 95 - 2* 4 6*2, 9/*
2- 5* 4 2,
7/17/2019 Alg_exp_wks_8th
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10. Dde-
,
28a/
&2
)2
b - 21a&/
)5
, 6a
5- a
/4 8a
2- 12a 4 / b a
/
, 8 1* 12*2
b / 2*
, 15a2
- 16a/ 4 a
2 - 10a 4 6 b /a - 1
,
5* - 6*
/ 4 8*
2 - /* 42 b *
2 - /* 41
,
</ 41 b +41
11. 7nd the otent and re#ander n ea)h o! the !o$$o'n( :
, 96*2 4 /* 4 10 , 92* 4 /,
, 9*5 4 *
2*
/ 10*
2 4 1/* 6, 9 *
2 4 2* /,
12. S#+$!"
, +92-5r, /=/>/+9-2r,-r? -2+@
, -5&2 =-/a
2 - >2a
2 -/a9&-2a,-5&9a-/a-&,?@
, *-=8*-2*-/"-2>*-92=*-92*-*-",?@
1/.
; #an re)ees Rs. 25* 10 as hs sa$ar" and Rs. 2/* 20 as &ons. He
&o(ht a (!t !or hs '!e )ostn( Rs. /* 10 and a (!t !or hs da(hter !or Rs.
5* 0. Ho' #)h does he hae3
1.
I! one note&ook )osts Rs. *2 1/* 4 0% 'hat s the )ost o! 9*-5, note&ook3
15. The area o! a re)tan($ar !e$d s a2 1a 4 0. 7nd the 'dth o! the
re)tan($e ! ts $en(th s a-.
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